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4 high frequency waves are a observed by the f2 layer b reflected by d layer c capable of use for long-distance communication on the moon d affected by the solar cycle?
Wiki User
∙ 11y ago
d) affected by the solar cycle.
As ionosphere is the part of upper atmosphere and it the top layer where high frequency waves are present and ionosphere is ionized by solar radiations.
Wiki User
∙ 11y ago
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